Yearly festivals in Penn's Landing?

Penn’s Landing, which was named after Pennsylvania founder William Penn landed there in 1682, serves as the site for summer activities that are open to the public and are mostly free. Penn’s Landing hasn’t always been that great, but thanks to the collaborative efforts of both Philadelphia and the Delaware River Waterfront Corporation the area has been built up to include the Independence Seaport Museum as well as the Blue Cross River Rink.